Molding apparatus.



J. E. WILGOXEN.

MOLDING APPARATUS.

APPLICATION FILED AUG. 17, 1912.

2 SHEETS-SHEET 1.

Patented Apr. 15, 1913.

a 1 3 W21 X 355% 3 m .w. 5 T m 0 J. E. WILCOXEN.

MOLDING APPARATUS. APPLIOATION I'ILBD AUG.17, 1912.

Patented Apr. 15, 1913.

2 SHEETS-SHEET 3.

COLUMBIA PLANOGRIAPN CO., WASHINGTON, D. C.

'UNITED l PATENT OFFICE.

JOI-INE. WILCOXEN, OF. SOUTH} BEND; INDIANA, ASSIGNORTO THESTUDEBAKER COR-l PORATIOLLOE SOUTH BEND, INDIANA, ACORPORATION OF JERSEY.

MOLDING APPARATUS.

Specification of Letters Patent.

Application filed August 17, 1912. Serial No. 715,595.

To all whom it may concern Be it known that I, JOHN 1E. WILCOXEN, citizen of the United States of America, residing at South Bend, in the county of St. J osephand State of Indiana, have invented certain new and useful Improvements in but the invention which I herewith disclose offers many advantages which will be ap preciated by those familiar with the art, in that through its operation essential movements are minimized and the parts are assembled, disassociated and again assembled with rapidity and precision, all of which results in economy of labor and accuracy of workmanship.

In the molding art one. of theidiflicult problems is that of separating the two parts of the flask, the copeand drag after the sand is tamped about the pattern, removing the pattern without injuring the impression in the sand and again bringing the parts together with accuracy and precision and without jar or strain which might injure or destroy the delicate impressions in the sand. This apparatus is particularly designed to accomplish this result, at the same time reducing the labor expended to a minimum.

The machine which I here describe as one embodiment of myinvention consists of a substantially vertical column or support on which a cope carrier is mounted to move in a fixed path preferably parallel with the axis of the column or support, also a pattern:

and drag carrier is mounted on the same column to move in the same path or direc tion, and to swinginto and out of said path and inco-njunction with thecopecarrier and the drag and pattern carrier and the support, I provide suitable means shown in its preferred form as a rope and pulleys for.

moving and controlling the motion of the carriersalong the fixed path described, so

that when the oopeiand drag are brought together or separated, or when the pattern is withdrawn the alinement is maintained. and. the movements are all without shocker jar, so that the danger of displacing; the sand and injuring the mold is minimized.

Patented Apr; 15,1913.

In the preferred form of my invention the cope; and pattern are moved simul-Y taneouslyin drawing the pattern, thc;cope carrierjmovingat, the higher speed so that. as thepa-ttern is withdrawn from the drag,

the cope is lifted from the pattern and.

drawing fromboth mold sections takes place at the same time. I

I The fact that the pattern and drag carrier can be rotated or swung laterally about 1 the support enables the operator to with-1 draw it from beneath the cope carrier and moveit to a convenient station to fill and tampvthe drag. This carrieris provided with a pivoted frame which swings about a horizontal axis and the pattern plate is mounted on this frame, therefore, the opera: tor can rotatethe pattern plate and place the drag thereon, and having packed the drag with sand close the same with a bot tom board and lock the board to the drag and the; drag to the carrier with bales similar to those usually provided for this purpose. He can then rotate the pattern. frame and drag about its horizontal. axis until the drag occupies its normal position beneath the pattern plate and swing the pat.- tern anddrag carrierabout the upright support until it reaches its position in alinement with or in the path of the cope where it is preferably locked against further late eral movement. Its movement is thus limited to the path of the cope which I have described.

The mechanism controlling the vertical movement of the carriers is now operated to lower the cope onto the drag and the drag onto a seat at the base of the column. The

cope is then packed and tamped, the bales binding the drag to its carrier are released and the mechanism of the carriers is reversed.

to raise the carriers. This movement, it

will be understood is in a straight line, that,

are limited to move. Hence the movements which result in the separation of the cope and the, drag and the. withdrawal of the pattern all takeplace along this path, 2'. 6., in a straight line. The drag being released rests on its seatwhile the copecarrier and pattern and drag carrier move upward, preferably the same way as before, and being, as stated,

in: alinementv with the drag which has rep mained in a fixed position since the drawing, I of the pattern, these two: parts of the flask are again brought together with absolute precision so that theimpressionsmadein the sand register and a complete mold is formed and assembled. The flask is now lockedand removed. 7 I

' The; movements above described should be accomplished without shockor jar "lest the sand in the cope and drag is disturbed, hence themechanisI-n for moving theseparts is: designedfwith that-result in view.

In the'aceompanying,drawings, I have illustrated, the preferred form in which my invention has beenembodied, designating" the. parts by numerals a-ndreferring to like parts. by like numerals.

Figure lis a, perspective view of the front of the machine, the flask and pattern being removed. Fig. 2 is a perspective of the machine taken from the left side, the pattern and drag carrierv being swung out of the path of the cope-carrier, Fig. 3; is a vertical,

central section through the pattern carrier bearing. Fig. t is .a horizontal section through the; cope carrier bearing. Fig. 5- is a, detail of the end of one of. thepzattern carrier arms showing the locking; pin. Fig. 6iisa detail of, a lug mounted on the cope carrier to engage the lifting band or rope. Fig. 7 shows an alternative type: of guide for the line coineiding with the pathof the cope ;carr1-er.. shoulder or annular bearing 34,. and en cir fgcling the sleeve 28 resting-Yon; this annular bearing is a second sleeve 35-. the pattern and dragcarrier- 36- issecured. As the sleeve 35: rotates on the sleeve 28, j the patternand d-rag'carrier may be rotated cope and pattern supportucarrier. Fig. 8 is a detail section. showing a, devioefor locking the pattern carrier, against, lateral movement.

In. the drawing-l. have shown. a. carriage 1 upon which. the machine may be mounted for convenience..inz-moving it from place to; place. Onthis carriage is an upright shaft or support 3 having a base plate 2 secured to the carriage. A'plate 4. is mounted, on top of the shaft and. avertical guide rod. 5,, preferably parallel withthe axis.- of the shaft 3, extends from the bottomtothe topv plate: andhas its ends seated in-the. plates 2; and 4; The. plate 45.18; provided with. brackets 6 6;

carrying the shaft 7 to which is secured the,

hand wheel 8; brackets 99, also mounted ien-tly driven by means of the hand wheel.

the shaft 7', so that the shaft 10 is conven- Mounted onthe shaft 10 are pulleys 1515 secured to each of which at one end are flexible cords 16, which pass around the pulleys 15 and from there extend downward and.

around the pulleys '18 on the pattern and drag carrying sleeve 28 hereinafter described. From the pulleys 18' the ropes ex tend upward to the top plate 4 to which they are secured at 17'. The ropesand cooperat inggear serve to move the carriers. The motion of the: carriers is checked at the will of the operator by means of a pawl 13, which engages a ratchet 121 on the hand wheel shaft 7; By this means rotation of the shaft: is arrested.

Mounted on the shaft 3- and adapted to slide thereon substantiallyparallel to the axis thereof is a sleeve l9'having an arm 20 extending outward therefrom. This .arm is provided at its end with a sleeve 21 which encircles: the guide rod *5 and slides thereon. The copeca-rrier 22' is secured tothe sleeve 19. It consists of a frame having parallel arms 23-23 with horizontal flanges 24L. vlVlountedon the cope carrier at convenient points are brackets 25. These are pierced ropes 16' and cooperating with thebrackers 25 are lugs 27 secured to the ropes, thelugs 27 engaging the brackets 25 serve to move the cope up and down the shaft or support 3 the rod -5',-withthe: sleeve 21, serving as aguide for the carrier preventing rotation on the shaft 3, and. causing it to move in a fixed rectilinear path.

A sleeve 28 upon which the pattern and drag carrieris mounted is sho-wnfin' section in Fig; 3. This sleeve: is provided with a radial arm 29, at the end of which is the sleeve 30 which. encircles'the guide rod and slides thereon, serving as a guide for gthe sleeve 28-, which carries the drag and patterncarrier. The carrier when thus rigidly secured to the sleeve moves in a straight At the base of the sleeve '281is a To this? sleeve relatively to the shaft or upright support 3-, as hereinafter set forth. The collar 31 encircles the sleeve 28-andis securedthereto above the sleeve 35 serving ,to hold the latter inposition. This collar is pierced with holes; 32- to: receive: the shafts 3-3 carry- .ing the pulleys 18.v The-drag and pattern at 26 orotherwise adapted to receive the carrier 36 consistsof a frame havingpar allel arms 3737, each of which is provided near its end with a:journal bearingBS. A pattern frame 40 provided with journals 41 to engage the bearings 38 swings between the arms 37, the bearings 38 and the journals 41 being pierced at 39 and 42 respectively to receive a pin139"which serves to by which the sleeve 35, and incidentallythe pattern and drag carrier :are locked to the sleeve 28 at will to prevent rotation ofthe carrier about the sleeve 28and about the shaft. When thus locked its movement is limited to the path ofsthe cope which: is preferably a straight line approachingythe vertical. This device consists of a bolt 45 with a helical spring 46l The sleeve 35 and the sleeve 28 are pierced withholes 47 and 48 to receive the bolts. These holes register1 and the bolt operates when the drag and pattern carrier is in alinement withthe cope carrier, 2'. 6., when it enters the fixed path of the cope carrier. so that whenthe lock is in operation, the movement of the pattern and drag carrier is limited to the straight line which is the path of thecope carrier. I have shown a drag49 resting ona drag support 51. This drag or flask part is provided with dowel pins 50 which cooperate with corresponding apertures in the cope. The latter is shown at 52 as supported on the cope carrier between the arms 23. The cope is slotted at 53 to receive bars 54 which rest on the flanges 24 of the arms 23 and serve to support the cope. t

In Fig.7 I have shown an alternate form of construction in which the sleeves 19 and 28 are provided with. afkey 55 to engage a slot in the upright shaft :3. By any such expedient, the guide rod 5 may bedispensed with, but the rod is the preferreddevice.

The operation of the machine is as follows: When the sleeve 35 to which the pattern and drag carrier 36 are secured is bolted to the sleeve 28, I may operate the hand wheel 8 ,andby sodoing raise and lower the cope and pattern and drag carrier, both carriers moving in a fixed path as described.

However, the c0pe:will move upwardtwice as fast as the patternand drag carrier for the reason that the lug 27 is secured to the moving part of the rope 16, which has the same speed as have the peripheries of the pulleys 15. While the drag andpattern carrier is operated by the said rope through themedium of the'pulleys 18about which the ropes are passed,ione end of eachrope being fixed. Hence, it iVVil]. be understood The frame 40 is that: the motion communicated to the pattern and drag carrier is but half that of thecope carrier. By turningthe wheels, I operate.

the pinion 11, the gear wheel 14, and hence the pulleys 15. Should I desire at any time to sustainthe carriers in any particular position, I drop the pawl :13 into engagement with the ratchetwheellQ. On the frame 43 I mount a pattern plate bearing'apattern in the formof the casting which I desire to produce. I have shown a skein patternbut this is merely for purposes of illustration.

To form a mold from this position of the parts, I first release the pattern and drag.

carrier so that it may revolve about the shaft 3. This is done by withdrawingthe pin 45 from its seat in the socket 48 and holding it until the hole 47 is moved out of registration with the socket 48. I then rotate the pattern and drag carrier to a .con-

venient position as that shown in F1gu2.

and remove the pin 39' so that the pattern frame 40 may berotated on its journals 41, the core openings being turned upw The pin. 39 may be then; replaced to lock the pattern plate in this position. The drag 49 is then placed on the inverted plate and the drag andcores are filled with sand or other molding material and tamped. A bottom board is then placedon the drag and secured thereto by means of bales 44. I then rotate the pattern plate and hence the drag.

so that thelatter is depending andfcorrespondingly unlock and lock the journal by means of the pin 39. I then swing the pattern and. drag; carrier about the shaft 3, the sleeve 35 rotating on the sleeve 28 until this carrier enters the path of the cope carrier and the pin 45 falls into the socket 48 locking the pattern and drag carrier against further lateral movement and limiting it to movement inthe rectilineal path of the cope carrier. The shaft 7 is then rotated by means of the handwheel 8 so as to lower the drag on to its seat 51, the pattern and drag carrier moving in the path of the cope. The cope carrier moves downward with the drag until the latter rests on its seat and I conpattern; I then fill the cope with molding 1 material and tamp it until thoroughly packed, then the hand wheel 8 is rotated. -liftingthelcope and pattern, the former moving at the higher rate of speed so that the pattern is withdrawn from the cope and drag simultaneously. It will be understood that in this operation, the path of the mov ing parts is a fixed straight line, and the chance of lateral motion of any member which might result in injury to the print; is

entirely eliminated. "When the cope is ele-= vated sufficiently to clear the pattern. and the latter is raised sufliciently to clear the dragythe pattern and drag carrier is :un:-.

locked by withdrawing. the pin Q5 and the carrier is rotated out of the path of the hope. The pawl 13, cotiperating with the ratchet 12 may beemployed at thisstage to sustain the cope: in position. The ratchet may now be released and by Operation of the hand wheehthe cope may be carefully lowered onto the drag; the latter will move down- Ward on the exact path bywhich it was with-- drawn and must therefore necessarily bereturned into exact registrationwith the drag, the dowell pins 50 in the latter entering the corresponding apertures in the cope, and the impressions in the molding. material will register in like manner with absolute precisiorr The cope and drag may now be bound. together in their usual way and removed for casting. r p 1 l? have thusd'eseribed specifically: and. in

detail a: single embodiment ofymy invention i n order that its nature and operation maybe clearly understood. However, the h specific terms herein are used in theirdescrlptwe rather-thanin their limiting. sense and the'seope ottheinvention isdefined in the-claims.

What-I claimis: I L

I. In a molding machine, 1n combination, an'upright supportand guide, a cope can,

rier'mounted thereon to move in a prede- I terniined fixed path which is straight and substantially vertical, a pattern and drag carrier also mountedon. the support to move in. the same path and" to swing into and out 016 said: path, and means formovingand: conand to rotate about the support intoxandout moving and controlling the motion of the carriers'.. r

3. lin-amolding machine, 1n. combination,

anupri ht support and guide, a cope carrier mounte thereon to move in a predetermined fixed path which is straight and sub stantially vertical, a pattern and drag car rier also mounted on the support to move in the same path; and to swing into and outof such path and meansfor moving and cone trolling the motion of the carriers, and causing, the cope carrier to move-at a rate of speed higher than-that of the pattern, and

drag carrier.

d. In a moldingmachine, anupright su p- I 1 and: means connecting' themovlng part of port and guide, a cope carrier mounted thereon to move in a predetermined rectip p i 9. In a molding machine,injcombination,

suppo t to move inthe same path and to be swung. at will into and out of "said-"path and means for locking. the pattern and drag:

carrier so that its: motion is limited to the; path of the cope and means for moving; the

fixed path parallel to the axis. of said sup-' port, a pattern and drag carrier also mounted on said support to move in the same'path and to swing about the support into and out of said path, means to moveithe carriers parallel with the support, said pattern and V V drag carrier being provided with means to support, the pattern and drag, such means mounted, to rotate about a; substantially:

horizontal axis;

6. in a mol'd-in'gapparatusgfa substantially 1 vertical support, a cope carrier: mounted to c move in a vpath substantiallyparallel with the axis of said support,ga Ipatterrr'.,'and

drag carrier also mounted on, said support to moveinthe same path and to? swing about the support into anduoutoit" said path -withmeans to move thecarrier along the movement and limit. travi rseto the-path of the copecarrier;

7'. In a moldingv apparatus, an upright support, a cope oarri'er mounted thereon tomove In a fixed path substantially: parallel V with: the axis of the: said support, a pattern i and drag earrieralso mounted on said sup port to mo ve in: the path-cofthe oope carrier of said path, means to move-the'carriersalondg V 3 said path at a predetermined relativespee isaid' pattern and drag; carrier being, pro

: vided with means to. support the pattern" and drag, such means journaled to -.rotate about f a substantially horizontal: axisand means to limit the movement; of the pattern and drag carrier tothe. same' fi'xed pathas that.- to

I which the cope carrier is limited. 5

. 8; In a moldingapparatuaa substantially vertical support, a cope carrier mounted there-on to move: in a: fixed rectilinear pathin the generaldirection of theaxis of? the said support, a pattern-qanddragficarrier also mounted" on said support to move. in I the same fi-Xed path." and to-r'ot-ate about" the support into and out: of saidpath, a flexible belt secured. at one end to" apoint; near the I top of said vertical supportandza driven 1 member towhich the other endiis connected, a. said member: being adjacentthe-topof said drag carrier engaging the loop of said belt.

said belt to the cope carrier.

support, the belt bein'gzcsu's'pended to form a loop, a pulley secured to thepattern and a pattern carrier also mounted on the support to slide vertically and swing laterally,

a pulley at the upper end of the su port, a flexible member secured, tothe pulley and passing over thesame, a pulley connected to the pattern carrier, the; flexible member passing under this pulley and upward to a point near the head of the upright, support Where it is made fast, a member on the cope carrier through which the flexible member passes and a stop secured to the flexible member to en age the said member from beneath and ii t the cope carrier, and means for rotating the pulley onathe support.

10. In a molding machine, meanstsupporting a drag, a patterniearrier and a cope carrier mounted to move toward and from the drag, and meansfor moving the pattern carrier and for moving the cope carrier at Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

same path and to swing column mtoand out of sa1d path, and means for moving the carrlers.

Signed by me at South Bend county of:

St. Joseph, State of Indiana, time 29th day of July 1912.

JOHN E. WILCOXEN;

Witnesses:

J OHN F. Cowman, AoLPH CoLBEno.

Washington, D. 0.?

pattern carrier mounted on the column to slide up and down in the 1 aterally about the, 

